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Finding the Fourth Proportional to 326,417.22, 489,628.56 and 89,772.88

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Solution

The fourth proportional to 326,417.22, 489,628.56 and 89,772.88 is: 134,660.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,417.22 : 489,628.56 = 89,772.88 : x
  2. Step 2: Convert to fraction form
    326,417.22/489,628.56 = 89,772.88/x
  3. Step 3: Cross multiply
    326,417.22x = 489,628.56 × 89,772.88
  4. Step 4: Simplify right side
    326,417.22x = 43,955,365,961.45
  5. Step 5: Solve for x
    x = 43,955,365,961.45/326,417.22
  6. Step 6: Final answer
    x = 134,660.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.